So I can not understand the bad reviews ...

I am certainly no god of film attachment. Constantly and eternally bubbles are under there or a small speck of dust has still lost. But in this film, I must say, everything went like clockwork. Display beautiful properly cleaned, "polished" using the supplied cloth and the film - as described - is set to the display. And then the film smoothed with a kind of "spatula". Impeccable. No bubbles, no stray speck of dust. The film I have now for 7 months in use, and I use my phone many, many times; it is constantly in use, and the film is still perfectly on the display. Nothing has slipped, nothing has come under it. If you do not know, you would not realize that because it sticks a film. So from my side an absolute buy recommendation, if you do it right and to abide by the instructions.